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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2017 dubenju@126.com.<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.teapot.db.orm;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>/**<a name="line.19"></a>
<span class="sourceLineNo">020</span> * 字符串格式化类。<a name="line.20"></a>
<span class="sourceLineNo">021</span> * @author dubenju@126.com<a name="line.21"></a>
<span class="sourceLineNo">022</span> * @since 0.0.1<a name="line.22"></a>
<span class="sourceLineNo">023</span> */<a name="line.23"></a>
<span class="sourceLineNo">024</span>public enum Formatter {<a name="line.24"></a>
<span class="sourceLineNo">025</span>  INSTANCE;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>  /**<a name="line.27"></a>
<span class="sourceLineNo">028</span>   * 把由下划线(_)连接成的变量格式化成小驼峰式命名法（lower camel case）.<a name="line.28"></a>
<span class="sourceLineNo">029</span>   * 第一个单字以小写字母开始；第二个单字的首字母大写，例如：firstName、lastName。<a name="line.29"></a>
<span class="sourceLineNo">030</span>   * @param str 要格式化的字符串<a name="line.30"></a>
<span class="sourceLineNo">031</span>   * @return 格式化后的结果<a name="line.31"></a>
<span class="sourceLineNo">032</span>   * @since 0.0.1<a name="line.32"></a>
<span class="sourceLineNo">033</span>   */<a name="line.33"></a>
<span class="sourceLineNo">034</span>  public String fmtVar(String str) {<a name="line.34"></a>
<span class="sourceLineNo">035</span>    if (str == null) {<a name="line.35"></a>
<span class="sourceLineNo">036</span>      return str;<a name="line.36"></a>
<span class="sourceLineNo">037</span>    }<a name="line.37"></a>
<span class="sourceLineNo">038</span>    String[] aryu = str.toUpperCase().split("_");<a name="line.38"></a>
<span class="sourceLineNo">039</span>    String[] aryl = str.toLowerCase().split("_");<a name="line.39"></a>
<span class="sourceLineNo">040</span>    StringBuffer buf = new StringBuffer();<a name="line.40"></a>
<span class="sourceLineNo">041</span>    if (aryl.length &gt; 0) {<a name="line.41"></a>
<span class="sourceLineNo">042</span>      buf.append(aryl[0]);<a name="line.42"></a>
<span class="sourceLineNo">043</span>      for (int idx = 1; idx &lt; aryu.length; idx ++) {<a name="line.43"></a>
<span class="sourceLineNo">044</span>        if (aryu[idx].length() &gt; 0) {<a name="line.44"></a>
<span class="sourceLineNo">045</span>          buf.append(aryu[idx].substring(0,  1));<a name="line.45"></a>
<span class="sourceLineNo">046</span>          buf.append(aryl[idx].substring(1));<a name="line.46"></a>
<span class="sourceLineNo">047</span>        }<a name="line.47"></a>
<span class="sourceLineNo">048</span>      }<a name="line.48"></a>
<span class="sourceLineNo">049</span>    }<a name="line.49"></a>
<span class="sourceLineNo">050</span>    return buf.toString();<a name="line.50"></a>
<span class="sourceLineNo">051</span>  }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>  /**<a name="line.53"></a>
<span class="sourceLineNo">054</span>   * 把由下划线(_)连接成的变量格式化成大驼峰式命名法（upper camel case）.<a name="line.54"></a>
<span class="sourceLineNo">055</span>   * 每一个单字的首字母都采用大写字母，例如：FirstName、LastName、CamelCase，也被称为Pascal命名法。<a name="line.55"></a>
<span class="sourceLineNo">056</span>   * @param str 要格式化的字符串<a name="line.56"></a>
<span class="sourceLineNo">057</span>   * @return 格式化后的结果<a name="line.57"></a>
<span class="sourceLineNo">058</span>   * @since 0.0.1<a name="line.58"></a>
<span class="sourceLineNo">059</span>   */<a name="line.59"></a>
<span class="sourceLineNo">060</span>  public String fmtFun(String str) {<a name="line.60"></a>
<span class="sourceLineNo">061</span>    if (str == null) {<a name="line.61"></a>
<span class="sourceLineNo">062</span>      return str;<a name="line.62"></a>
<span class="sourceLineNo">063</span>    }<a name="line.63"></a>
<span class="sourceLineNo">064</span>    String str2 = str.replaceAll("\\.", "_");<a name="line.64"></a>
<span class="sourceLineNo">065</span>    String[] aryu = str2.toUpperCase().split("_");<a name="line.65"></a>
<span class="sourceLineNo">066</span>    String[] aryl = str2.toLowerCase().split("_");<a name="line.66"></a>
<span class="sourceLineNo">067</span>    StringBuffer buf = new StringBuffer();<a name="line.67"></a>
<span class="sourceLineNo">068</span>    for (int idx = 0; idx &lt; aryu.length; idx ++) {<a name="line.68"></a>
<span class="sourceLineNo">069</span>      if (aryu[idx].length() &gt; 0) {<a name="line.69"></a>
<span class="sourceLineNo">070</span>        buf.append(aryu[idx].substring(0,  1));<a name="line.70"></a>
<span class="sourceLineNo">071</span>        buf.append(aryl[idx].substring(1));<a name="line.71"></a>
<span class="sourceLineNo">072</span>      }<a name="line.72"></a>
<span class="sourceLineNo">073</span>    }<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span>    return buf.toString();<a name="line.75"></a>
<span class="sourceLineNo">076</span>  }<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span>  /**<a name="line.78"></a>
<span class="sourceLineNo">079</span>   * 用填充位的字符串把要格式化的字符串填充成指定长度的字符串.<a name="line.79"></a>
<span class="sourceLineNo">080</span>   * @param in 要格式化的字符串<a name="line.80"></a>
<span class="sourceLineNo">081</span>   * @param ch 填充位的字符串<a name="line.81"></a>
<span class="sourceLineNo">082</span>   * @param len 格式化后的字符串长度<a name="line.82"></a>
<span class="sourceLineNo">083</span>   * @return 格式化后的结果<a name="line.83"></a>
<span class="sourceLineNo">084</span>   * @since 0.0.1<a name="line.84"></a>
<span class="sourceLineNo">085</span>   */<a name="line.85"></a>
<span class="sourceLineNo">086</span>  public String fmt(String in, String ch, int len) {<a name="line.86"></a>
<span class="sourceLineNo">087</span>    if (ch == null || ch.length() &lt;= 0) {<a name="line.87"></a>
<span class="sourceLineNo">088</span>      return in;<a name="line.88"></a>
<span class="sourceLineNo">089</span>    }<a name="line.89"></a>
<span class="sourceLineNo">090</span>    int length = 0;<a name="line.90"></a>
<span class="sourceLineNo">091</span>    if (in != null) {<a name="line.91"></a>
<span class="sourceLineNo">092</span>      length = in.length();<a name="line.92"></a>
<span class="sourceLineNo">093</span>    }<a name="line.93"></a>
<span class="sourceLineNo">094</span>    int max = len - length;<a name="line.94"></a>
<span class="sourceLineNo">095</span>    StringBuffer buf = new StringBuffer();<a name="line.95"></a>
<span class="sourceLineNo">096</span>    if (max &gt; 0) {<a name="line.96"></a>
<span class="sourceLineNo">097</span>      while (max &gt; 0) {<a name="line.97"></a>
<span class="sourceLineNo">098</span>        buf.append(ch);<a name="line.98"></a>
<span class="sourceLineNo">099</span>        max --;<a name="line.99"></a>
<span class="sourceLineNo">100</span>      }<a name="line.100"></a>
<span class="sourceLineNo">101</span>    }<a name="line.101"></a>
<span class="sourceLineNo">102</span>    if (in != null) {<a name="line.102"></a>
<span class="sourceLineNo">103</span>      buf.append(in);<a name="line.103"></a>
<span class="sourceLineNo">104</span>    }<a name="line.104"></a>
<span class="sourceLineNo">105</span>    return buf.toString();<a name="line.105"></a>
<span class="sourceLineNo">106</span>  }<a name="line.106"></a>
<span class="sourceLineNo">107</span><a name="line.107"></a>
<span class="sourceLineNo">108</span>  /**<a name="line.108"></a>
<span class="sourceLineNo">109</span>   * 把字符串格式化成大写的.<a name="line.109"></a>
<span class="sourceLineNo">110</span>   * @param str 要格式化的字符串<a name="line.110"></a>
<span class="sourceLineNo">111</span>   * @return 格式化后的结果<a name="line.111"></a>
<span class="sourceLineNo">112</span>   * @since 0.0.1<a name="line.112"></a>
<span class="sourceLineNo">113</span>   */<a name="line.113"></a>
<span class="sourceLineNo">114</span>  public String upper(String str) {<a name="line.114"></a>
<span class="sourceLineNo">115</span>    if (str == null) {<a name="line.115"></a>
<span class="sourceLineNo">116</span>      return str;<a name="line.116"></a>
<span class="sourceLineNo">117</span>    }<a name="line.117"></a>
<span class="sourceLineNo">118</span>    return str.toUpperCase();<a name="line.118"></a>
<span class="sourceLineNo">119</span>  }<a name="line.119"></a>
<span class="sourceLineNo">120</span><a name="line.120"></a>
<span class="sourceLineNo">121</span>  /**<a name="line.121"></a>
<span class="sourceLineNo">122</span>   * 把字符串格式化成小写的.<a name="line.122"></a>
<span class="sourceLineNo">123</span>   * @param str 要格式化的字符串<a name="line.123"></a>
<span class="sourceLineNo">124</span>   * @return 格式化后的结果<a name="line.124"></a>
<span class="sourceLineNo">125</span>   * @since 0.0.1<a name="line.125"></a>
<span class="sourceLineNo">126</span>   */<a name="line.126"></a>
<span class="sourceLineNo">127</span>  public String lower(String str) {<a name="line.127"></a>
<span class="sourceLineNo">128</span>    if (str == null) {<a name="line.128"></a>
<span class="sourceLineNo">129</span>      return str;<a name="line.129"></a>
<span class="sourceLineNo">130</span>    }<a name="line.130"></a>
<span class="sourceLineNo">131</span>    return str.toLowerCase();<a name="line.131"></a>
<span class="sourceLineNo">132</span>  }<a name="line.132"></a>
<span class="sourceLineNo">133</span>}<a name="line.133"></a>




























































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